CCleaner just became worse. The popular system-cleaning tool now always runs in the background, nagging you and reporting anonymous data back to the company’s servers. We don’t recommend you upgrade to CCleaner 5.45. Here’s what you should use instead.
We haven’t been huge fans of CCleaner for a while now. CCleaner nags you to run it because the paid subscription can automatically run itself—you’re paying to disable the nags. CCleaner has even been hacked to contain malware.